A triangular plot of land has vertices PPP, QQQ, and RRR. The distance from P P\,P to Q Q\,Q is 42 cm and the distance from P P\,P to R R\,R is 35 cm. The area of the plot is 600 cm2.
Calculate the perimeter of the triangle PQRPQRPQR.
Give your answer to 3 significant figures.
Practise OCR GCSE Maths The Cosine Rule with exam-style questions for Foundation and Higher tier. 44 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.